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27319531 is a prime number
BaseRepresentation
bin110100000110…
…1110011101011
31220101222100111
41220031303223
523443211111
62413315151
7451132531
oct150156353
956358314
1027319531
111446a628
129195ab7
135876c05
1438b2151
1525e9a21
hex1a0dceb

27319531 has 2 divisors, whose sum is σ = 27319532. Its totient is φ = 27319530.

The previous prime is 27319499. The next prime is 27319559. The reversal of 27319531 is 13591372.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27319531 - 25 = 27319499 is a prime.

It is a super-2 number, since 2×273195312 = 1492713548119922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27319493 and 27319502.

It is not a weakly prime, because it can be changed into another prime (27319631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13659765 + 13659766.

It is an arithmetic number, because the mean of its divisors is an integer number (13659766).

Almost surely, 227319531 is an apocalyptic number.

27319531 is the 2338-th centered decagonal number.

27319531 is a deficient number, since it is larger than the sum of its proper divisors (1).

27319531 is an equidigital number, since it uses as much as digits as its factorization.

27319531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5670, while the sum is 31.

The square root of 27319531 is about 5226.8088734906. The cubic root of 27319531 is about 301.1788101037.

The spelling of 27319531 in words is "twenty-seven million, three hundred nineteen thousand, five hundred thirty-one".